I'm looking for opinions about its quality.
It depends what you want it for. As Alveus said, it's useful because it presents the text of the readings of the (Byzantine) Lectionary in order. If you don't mind the translation (I think it's KJV), you could read the texts from this book and use your Bible for other kinds of reading. There isn't too much commentary per reading, though.
If you're looking for something that's heavy on commentary, I'd look elsewhere. But if you want to have the daily readings and a short (usually) patristic text or two in one convenient location, perhaps as an add-on to your morning or evening prayers, it's not a bad thing at all.
If you consider C.I. Scofield the dispensationalist to be a Holy Father, then sure. He's around plenty.
Yeah, I'm not sure why the compiler felt like adding that kind of stuff, but to be fair, non-Orthodox sources are clearly indicated as such.